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oh, that probably should have been `100%` instead of `limits`. It might work better when booted into Sorbet. I think I did my restore from Leopard instead of Tiger so it might have worked better for me.

Hmm, it didn't resize the filesystem when after it restored the image, odd.. Try a: diskutil resizeVolume "/Volumes/Sorbet Leopard R15" limits in terminal

Hmm, I wonder if the init code could be divined by examining the ROM of an compatible video card using something like https://github.com/openbios/fcode-utils . The ROM might define a set of DDC/I2C OpenFirmware commands that then might be possible to look at what data they're called with.

I've got some simpler code that should do the black and white classic Mac mode (512x342) that you an use as a reference. I found the PicoVGA code hard to follow because of the complexity of handling multiple modes and color depths. https://github.com/crackmonkey/macvid There are basic...

In Arizona we make them very similar except with beef.

Picking through an old tool briefcase a former coworker left behind I found these bits of plastic in a baggie. I suspect they're from an old compact Mac, but which one/ones? I'm gonna make a 3d model of the buttons before I do anything else with them.

I'm looking for some wisdom from those who have meddled in the dark arts of CRT repair. I've got an Osborne 1 with a Nuevo 80 column card but the CRT is a little off. It works, but once it gets past mid-screen the CRT seem to rush to finish the frame as evidenced by the small "Insert disk" line...

Hmm, definitely not repetitive enough to be a RAM array. I'm gonna go with a paleolithic ancestor to modern FPGAs, where the "field programable" part means soldering all those jumper wires between different logic gates.

A guess would be that it's auto-detecting the coax connection. You'll just have to rewire everything to thin net ;) It's not clear how the auto-detection logic works, and there aren't any suspicious aluminum electrolytic capacitors in sight. Maybe one of those ceramic disc or tantalum caps...

Neat. Has anyone made videos going over the history and use of these beasts?

I got my first attempt at PCB designing back from PCBWay and it mostly works! I just submitted a V2 design to be made after realizing the unreliable behavior on one column of keys was because the Feather I'm using has the voltage from the LiPo socket routed there so you can monitor it, but in a...

The GitHub app really smooths things out for people not used to dealing with Git every day. Another thought for this information is an address snooper. For machines using ROM SIMMs it seems easy enough to get the address of the code being run, maybe you can do the same by clipping into ROM...

Nice. Looks like they used the BeagleBone's PRU which is similar but more capable than the Pico's PIOs. Pi Pico's are about the only Pi's you can regularly get your hands on right now, I have two on a USPS truck out for delivery today.

In theory, yes, if you can get your hands on a Raspberry Pi Pico or other RP2040-based board running CircuitPython. I made a script and PIO program to generate a classic mac 512x342 signal to use to test another program that converts that signal to 1024x768 VGA. Going by this diagram...

I didn't want to volunteer Eric for more work, but it could be a handy debugging tool to have a USB-SCSI bus sniffer or be able to replay transactions against development code.

I feel I've seen a dip in quality control since we lost The Steve. With the OS developers no longer living in mortal terror the amount of logged errors you see in Console on a healthy and idle system has exploded. I don't think jobs would have stood for a steady stream of "expected" errors, even...

I suspect that they're bit-banging out SCSI from the EZUSB chip(s) much like BlueSCSI, RaSCSI, and SCSI2SD do, just in reverse. The BlueSCSI hardware could probably be reprogrammed to pass SCSI data in & out the USB port if someone finds a good driver interface to copy. I don't think there is...

While pondering turning an Osborne 1 case into the sleeper gaming PC and whether to use the original CRT I realized that upgrading the keyboard to Bluetooth would be an easy first step. The Osborne keyboard doesn't have any brains, the cable just exposes the raw keyboard matrix making it super...

That looks like the resource forks are in AppleDouble format (https://en.wikipedia.org/wiki/AppleSingle_and_AppleDouble_formats). You'll need a modern-ish Mac with OSX to mount the UDF and then copy the files to a volume the old Mac can read.

I think you can do it with just Disk Utility's restore functionality. The PPC/Intel cross-over will be limited by which Intel systems (if any) support booting from Apple Partition Map drives. I don't think OpenFirmware on any PPC Macs support booting from GPT partitioned drives. Carbon Copy...